Clayton p



O. P. SMITH.

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PUMP.

Pitented Sept. 29, 1891.

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UNITED STATES PATENT OFFICE.

CLAYTON P. SMITH, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR TO THE AMERICANPUMP MANUFACTURING COMPANY, OF CALIFORNIA.

P U M P.

SPECIFICATION forming part of Letters Patent No. 460,223, datedSeptember 29, 1891. Application filed October 31, 1890- Serial No.369,963. (No model.)

To all whom it may concern;

Be it known that I, CLAYTON P. SMITH, a citizen of the United States,residing in the city and county of San Francisco, State of California,have invented an Improvement in Pumps; and I hereby declare thefollowing to be a full, clear, and exact description of the same.

My invention relates to certain improvements in pumps; and it consistsin certain details of construction, and arrangement of valves, whichwill be more fully explained by reference to the accompanying drawings,in which Figure 1 is a sectional view showing the interior of the pumpand itsvalves. Fig. 2 is an enlarged view of the inlet-valve. Fig. 3 isan enlarged view of the plunger-valve. Fig. at is a perspective view ofthe plunger and valve. Fig. 5 is a plan view of the plunger.

The object of my invention is to provide float or hingeless valves witha free opening for the passage of liquids or fluids which are to bepumped, and a means for guiding and controlling the movements of thevalves.

A is the pump-cylinder.

is a piston, which is adapted to reciprocate within the cylinder, andthis piston has an opening made through it for the free passage of theliquid.

At the bottom of the pump-cylinder is fixed the inlet-valve C, throughwhich the material to be pumped passes, and it closes to prevent itsflowing out again when the piston is depressed in the usual manner forpumps. A peculiarity of the construction lies, essentially, in thevalves. The opening for the lower or suction valve is made ofconsiderable diameter, as shown at D, leaving but a narrow rim or flangeupon which the valve may seat. The valve itself is a disk of sufflcientdiameter to rest upon the rim or flange and close the opening.

Just above the valve, at one side, are fixed two pins E, against whichthis edge of the valve will impinge when it is lifted, and upon theopposite sideand higher up is fixed another pin F, which arrests theupper edge of the valve. The pins E are fitted so that they may screw inor out, so as to leave a greater or less projection on the interior ofthe pump, against which the lower edge of the valve is retained, and thepin F is fitted into a slot or channel, so that it may be adjusted up ordown, and thus allow the free or moving edge of the valve to move andopen to a greater or less distance, as the character of the material tobe pumped requires.

The valve C is simply a round disk, which, when closed, fits closelyupon the flange around the inner passage D, and when it is opened by theinward flow of the material caused by the rise of the piston it is onlychecked by its contact with the projecting pin F. It will be seen thatas the valve commences to rise the rear edge of it will first come incontact with the pins E, and the other edge will continue to rise untilthe valve stands at an angle within the passage, this opposite edgebeing checked by contact with the pin F, as before stated. The valve maybe made of any suitable or desirable material, depending upon thematerial to be pumped, being made either of glass, rubber, metal, orother substance which will arrest the action of any corrosive or causticmaterial, and as no hinge-pins or journals are employed it is notdiflicult to make the valve of any material. Being perfectly free toturn about, it is manifest that it may change its position freely, andconsequently there will be no more wear upon one part of the valve thanthe other. The plunger-valve is operated in a similar manner, having nohinge, but being allowed to lift and close freely. It may be guided andchecked in its movementsin various ways. One method is to flatten thepump-rod and to make aslot through the valve corresponding in shape tothe flattened section of the pump-rod. The upper shoulders of theflattened section are beveled or inclined, as shown in Fig. 3, so thatthe valve when lifted by the inflow of the material through the pistonor plunger will stand at an angle, as shown, the back being checked bythe inclined shoulders H.

Another form, which is preferable, is shown in Fig. 1, in which theplunger-rod J is bent into a curve, as shown at I, and the valve G isperforated, so as to clasp or inclose the rod below this curve whenclosed. YVhen the valve is open, it will be inclined upward and itsupper edge will strike against the upper part of the curve, which willthus arrest it to prevent any further movement, the valvestand servingas a guide for the valve in the same manner as previously described. Thecenter of the plunger presents sufficient surface to receive the rod andto cover the hole in the valve when the latter is closed. By thisconstruction both the suction-openingD and the opening through theplunger may be made of large size, and the valves are particularlyeffective in pumping thick and heavy liquids, operating perfectly whereball and other float valves will not work at all. The upper end of thepump has a cap fitting around the piston-rod, with a cup at the upperend, so that any liquid which may follow the rod up by cohesion will becaught in this .cup and returned again through the opening around therod. The lower valve may either be fixed directly at the lower end ofthe pump-cylinder or it may be fixed in a sleeve which telescopes uponthe lower end of the pump-cylinder and may be removed at will.

At any suitable point in the pump-cylinder between the piston and theupper end is fixed the discharge pipe or faucet L. Around thepump-cylinder is fitted a sleeve or collar M, of any suitable material,which clasps the cylinder closely enough to remain at any point, butwhich may be moved by considerable pressure. When this pump is employedfor use with cans, such as coal-oil and some other materials are shippedin, it is only necessary to punch a hole through the top of the can witha tapering marline-spike. The pump is then introduced until the lowerend is at the proper position with relation to the bottom of the can,and this surrounding sleeve M is pushed down until the lower end fitssnugly into the opening made. This serves at once to steady and supportthe pump-barrel, and the contents of the can may be pumped out from timeto time without turning the can down upon the side or employing any ofthe usual methods for discharging the can. If the can has a screw-top,the collar M is screwthreaded to fit the corresponding part of the canto which it is thus easily received. The sleeve or collar M makes ajoint sufficiently tight to prevent evaporation, while holding the pumpsteadily, and it will be manifest that no leakage can occur, as the canalways remains right side up.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. A pump having a barrel, plunger, and plunger-rod, the latter havinginclined shoulders formed upon it, in combination with a hingeless diskmounted upon the plunger-rod and limited in its movement by the inclinedshoulders thereon, substantially as herein described.

2. In combination with a pump-cylinder and plunger having theinlet-openings, the hingeless disk or valve fitted to close upon theseat of the inlet-opening, pins acting as stops to limit the lift of therear edge of the valve, and a third pin upon the opposite side of thecylinder acting as a stop for the opposite edge of the valve, said pinsbeing adj ustable in the sides of the cylinder, substantially as hereindescribed.

3. In a pump, the pump-cylinder with the inlet-valve and the plungerhaving an opening made through it, a piston-rod having inclinedshoulders or stops formed upon it, and a hingeless disk or valveperforated to fit around the piston-rod and limited in its movements bythe shoulders upon the piston-rod, substantially as herein described.

In Witness whereof I have hereunto set my hand.

CLAYTON P. SMITH.

IVitnesses:

S. H. NOURSE, H. 0. LEE.

